c650

CITIZEN QUARTZEco-Drive

WORLD TIME

Model No. JR3XXXCal. No. C650

• INSTRUCTION MANUAL

CTZ-B8047

1. FeaturesThis watch is a combination solar-powered watchthat contains a solar cell in its face that drives thewatch hands, alarm, chronograph, timer andnumerous other functions by converting light energyinto electrical energy.It is also equipped with convenient functionsincluding three power save modes that reducepower consumption when light is not shining on thesolar cell, and a “charge indicator” that roughlyindicates how much the secondary battery ischarged.

2. Before Using

A secondary battery is used in this watch to storeelectrical energy. This secondary battery is a cleanbattery that does not contain mercury or other toxicsubstances. Once fully charged, the watch willcontinue to run for a maximum of 4 years withoutadditional charging (when in the power save 2 mode).

[Proper Use of this Watch]To use this watch comfortably, make sure torecharge it before it stops running completely.There is no risk of overcharging the watch nomatter how often it is recharged (OverchargingPrevention Function).It is recommended that the watch be rechargedevery day.

3. Names of Components and Major Functions

Please charge the watch fully before use byexposing it to light.When the watch does not operate according tothe instruction manual, it is insufficiently charged.Charge the watch for at least 3 hoursapproximately 20cm (8in) away from a fluorescentor incandescent lamp (30W) as a light source.When charging, do not place the watch too closeto the light source to prevent the watch frombecoming too hot.* When charging the watch under direct sunlight,

charge for at least 50 minutes.

This watch is a solar-powered watch.Before using, allow light to shine onto thewatch so that it is sufficiently charged.If the manual power save function has beenactivated, cancel it before charging. (Refer tothe information on the procedure forcancelling the manual power save function.)

Name/Mode Time Calendar Alarm-1 Alarm-2

➀ Mode hand TME CAL AL-1 AL-2

➁ Hour hand Always indicates “hours”

➂ Minute hand Always indicates “minutes”

➃ Second hand Always indicates “seconds”

➄ 24 hour hand Always indicates “24 hour time” in conjunction with hours and minutes

➅ UTC hour hand Always indicates “UTC hour”

➆ UTC minute hand Always indicates “UTC minutes”

City name

Charge indicator

➇ Digital display 1

➈ Digital display 2

Hours, minutes, seconds,A/P, SMT (when set todaylight savings time)

Month, date, day, SMT(when set to daylightsavings time)

Hours, minutes, A/P, alarm(ON/OF)

Alarm 3 Chronograph Timer Zone setting

AL-3 CHR TMR SET

Always indicates “hours”

Always indicates “minutes”

Always indicates “seconds”

Always indicates “24 hour time” in conjunction with hours and minutes

Always indicates “UTC hour”

Always indicates “UTC minutes”

Measured time (hours)City name

Charge indicator

Measured time(seconds, minutes,1/100 seconds)

Remaining time display(minutes, seconds)

Set time (minutes) City name

City name (SET/OFF) SMT(ON/OFF)

Hours, minutes, A/P,alarm (ON/OF)

4. Switching the Mode (Display Functions)In addition to the time and date modes, this watchis also equipped with three additional modesconsisting of the alarm, chronograph and timermodes. The mode can be switched by turning thecrown. Check the current mode with the mode hand.

<Switching the mode>

5. Checking 0-Position of Each HandBefore using this watch, check that the 0-position(base position of each hand) is set currently toensure that the functions of the watch operateproperly by performing the following procedure.

<0-Position Check>1. Turn the crown while in the

normal position to set themode hand to thechronograph [CHR] mode.

2. Pull the crown out to thesecond click (0-positioncorrection position).

• The second hand, minute hand, hour hand, 24-hour hand and UTC minute hand rapidly advanceto the 0-position (12:00 position).

Note:* When each hand is not at the 0-position perform

the “0-position correction” procedure. If this 0-position is out of alignment, each hand will notindicate the correct position.

<0-Position Correction (setting the watch baseposition>When setting the 0-position of each hand, alwaysmake sure to turn the crown forward (clockwise) toset each hand in its 0-position in the clockwisedirection.1. Turn the crown while in the normal position to set

the mode hand to the chronograph [CHR] mode.2. Pull the crown out to the second click (0-position

correction position).• The second hand, minute hand, hour hand, 24-

hour hand, UTC hour hand and UTC minute handrapidly advance to the position stored in memory.

• “HR” lights during digital display 2 indicating thatthe watch is in the correction state.

3. Turning the crown forward (clockwise) allowscorrection to be made in the positive direction.Turning the crown continuously allows the 0-position to be corrected continuously.

4. Pressing button (A) switches the correctionlocation between “MIN” (minute hand) and “SEC”(second hand) each time it is pressed.

5. Turn the crown forward (clockwise) to align eachhand at the 0-position at each correction location.Although correction can be made in the negativedirection by turning the crown backward(counter-clockwise), always make sure to set the0-position by turning the crown forward to ensurethat the 0-position is set correctly.

• The 24 hour hand is corrected in conjunction withthe hour hand.

• The UTC hour and minute hands are corrected inconjunction with the minute hand.

• The second hand can only be corrected in theforward (clockwise) direction only.

6. After correcting, return the crown to the normalposition.

• After correcting the 0-position of each hand, resetthe time, calendar and other modes before usingthe watch.

NoteNone of the buttons on the watch operate duringmovement of each hand.Operate the buttons only after the hands havestopped moving.

Name/Mode

Crownposition

Normalposition

1st click

Date correction Alarm time correction2nd click

Normalposition

1st click

2nd click

Normalposition

1st click

2nd click

Time Calendar Alarm-1 Alarm-2

Mode switching

➉ Crown ------

------

Time correction

Changing the city

Switching location to be corrected

Button (A)

Button (B)

Changing the city

------

Switching SMT (ON/OF)Switching between“seconds” correction and“24 hour time” correction

------ Switching alarm (ON/OF)

Switching alarm (ON/OF)

Alarm 3 Chronograph Timer Zone setting

Mode switching

-------- Changing the city

Changing the city

Switching city name (SET/OFF)


Alarm time correction 0-position setting

Start/stop

Set time correction

--------

City name, time difference setting

Changing the city

--------


Changing the city Changing the citySplit, reset Reset

--------

--------

Switching SMT (ON/OF)Switching alarm (ON/OF)

Switching alarm (ON/OF)

6. Accessing Times or Dates of Major CitiesThe time or date of major cities pre-registered inthis watch can be easily accessed by pressing thebuttons.

<Access Procedure>1. Turn the crown to set the mode hand to the time

[TME] or [CAL] calendar mode.2. When button (A) is pressed, the times or dates of

major cities are displayed while scrolling up eachtime it is pressed.

3. When button (B) is pressed, the times or dates ofmajor cities are displayed while scrolling downeach time it is pressed.

• Pressing button (A) or (B) continuously causes thedisplay to advance rapidly.

7. Switching Analog Time and Digital TimeThis watch is able to switch between analog timedisplay and digital time display.

<Switching Procedure>1. Turn the crown to set the mode hand to the time

[TME] mode.2. Press buttons (A) and (B) simultaneously.3. After a confirmation tone sounds, the watch

switches the time of the city displayed by thedigital display.

• If buttons (A) and (B) are simultaneously pressedwhen in calendar [CAL] mode, the watch switchesthe date of the city displayed by analog displayand the date of the city displayed by digital display(the times are switched at this time as well).

8. Setting the Time (Time is corrected by digitaldisplay)When digital time is corrected, the second, minute,hour, 24 hour and UTC hour and minute hands ofthe analog time are corrected automatically inconjunction with digital time.1. Turn the crown and set the mode hand to the

time [TME] mode.2. Press either button (A) or button (B) to access

the city to be corrected.3. When the crown is pulled out to the second click

(time setting position), the watch enters the timecorrection state.

4. When button (A) is pressed, the location to becorrected changes each time it is pressed. Selectthe location to be corrected. (The location that isflashing is the location that can be corrected).

• When button (B) is pressed in the [SMT] daylightsaving time correction state, daylight savings timecan be set (ON) or cancelled (OFF).

• “Seconds” return to zero when button (B) ispressed in the “seconds” correction state.

• When the crown is turned forward (clockwise) inthe “hour” or “minute” correction states, correctionis made in the positive direction. Turning thecrown continuously allows “hours” or “minutes” tobe corrected continuously. Although correction canbe made in the negative direction when the crownis turned backward (counter-clockwise), alwaysmake sure to turn the crown forward to ensurethat the time is set correctly.

• Switching “12H/24H time” is performed bypressing button (B).

5. After corrections have been completed, returnthe crown to the normal position.

Notes:1. Daylight savings time can be set for each city.2. When the time is set for any city, the times of

other cities, including UTC time, are correctedautomatically.

3. When changing the time, the crown and downbuttons do not respond even if operated. Ensurethat the required procedures have beenperformed correctly by first checking that the timehas changed.

9. Setting the Date (Date is corrected by digital display)1. Turn the crown and set the mode hand to the

calendar [CAL] mode.2. Press either button (A) or button (B) to access


(date setting position), the watch enters the datecorrection state.

4. When button (A) is pressed, the location to becorrected so that it is flashing is pressed. Selectthe location to be corrected so that it is flashing.

• When the crown is turned forward (clockwise),correction is made in the positive direction. Whenthe crown is turned backward (counter-clockwise),correction is made in the negative direction.Turning the crown continuously allows correctionsto be made rapidly.


<Date Correction State>

Notes:1. When the date is set for any one city, the dates

of other cities, including UTC time, are correctedautomatically.

2. The year can be set from 2000 to 2099.3. The day is corrected automatically when the

year, month and date are set.4. Since this watch is equipped with an auto-

calendar function, it is not necessary to correctthe date at the end of the month.

5. When the date has been set to a non-existentdate, the watch automatically displays the 1stday of the following month when the watch isreturned to the normal display.

10. Using The Alarm ModeThe alarm setting procedure and other proceduresfor alarm use are the same for alarms 1, 2 and 3.Only the tone that sounds is different.The alarm sounds for 15 seconds when the settime is reached once a day.When the alarm is sounding, it can be turned off bypressing button (A) or (B).

<Setting the Alarm Time>1. Turn the crown and set the mode hand to either

the alarm 1, 2 or 3 [AL-1, 2 or 3] mode.2. Press either button (A) or button (B) to access


(alarm time setting position), the watch enters thealarm correction state.

4. When button (A) is pressed, the location to becorrected changes each time it is pressed. Selectthe location to be corrected so that it flashes.

• The alarm can be set (ON) or cancelled (OFF) bypressing button (B) when the watch is in the alarmON/OFF correction state.

• When the crown is turned forward (clockwise) inthe “hours” or “minutes” correction state,correction is made in the positive direction. Whenthe crown is turned backward (counter-clockwise),correction is made in the negative direction.

• Turning the crown continuously allows correctionsto be made rapidly.


Note:1. When the time mode is set to the 12 hour time

display, the alarm time also uses a 12 hour timedisplay. Pay attention to AM and PM whensetting the alarm time.

<Switching Alarm ON and OFF>The alarm can be switched ON and OFF by pullingout the crown to the first click even when not in thealarm correction state.1. Pull out the crown to the first click in the alarm

mode to allow the alarm to be switched ON andOFF.

2. Pressing button (B) switches the alarm ON andOFF each time it is pressed.

3. Return the crown to the normal position after thealarm has been set to ON or OFF.

<Alarm Monitor>1. Pressing buttons (A) and (B) simultaneously

during the normal alarm display causes the alarmto sound for as long as they are pressed.

11. Using the ChronographThe chronograph is able to measure and displaytime up to a maximum of 23 hours, 59 minutes,59.99 seconds in 1/100th second units. After 24hours have elapsed, the chronograph automaticallyreturns to the chronograph reset display (00’00”00)and stops.

<Normal Chronograph Display><Chronograph Measurement>1. Turn the crown to set the mode

hand to the chronogrpah [CHR]mode.

2. Pressing button (A) repeatedlystarts and stops the chronographeach time it is pressed.

3. Split time is displayed for 10 seconds whenbutton (B) is pressed during chronographmeasurement.

• The “SPL” mark flashes during split time display.

4. Pressing button (B) while the chronograph isstopped returns the chronograph to thechronograph display.

*1: Returns automatically after timing for 24 hours

*2: Returns automatically after 10 seconds

12. Using the TimerThe timer can be set to a maximum of 99 minutesin 1 minute units. When the set time has elapsed, atone indicating that the set time is up sounds forabout 5 seconds, after which the timer returns tothe timer initial setting display.

<Timer Initial Setting Display><Setting the Timer>1. Turn the crown to set the mode

hand to the timer [TMR] mode.2. Pull out the crown to the second

click (timer setting position) toenter the “minutes” correctionstate.

3. When the crown is turned forward (clockwise) inthe “hours” or “minutes” correction state,correction can be made in the positive direction.When the crown is turned backward (counter-clockwise), correction can be made in thenegative direction.

4. After setting, return the crown to the normalposition.

<Using the Timer>1. Press button (A) to start the timer.2. Press button (A) again during measurement

stops the timer.3. Pressing button (B) during measurement returns

the watch to the timer initial setting display andresumes measurement.

4. Pressing button (B) when the timer is stoppedreturns the watch to the timer initial setting display.

13. Using Zone SettingThe zone setting function enables only those citiesfor which “SET” has been selected to be easilyaccessed (displayed) in each mode. Daylightsavings time can also be set for each city. Inaddition, the user is also able to arbitrarily registerone city and time difference.

<Using Zone Setting>1. Turn the crown while in the normal position and

set the mode hand to the mode setting [SET] mode.2. The city can be changed by pulling out the crown

to the first click (for changing cities between SETand OFF and for setting the location for switchingto daylight savings time).

3. Turn the crown to access the city to be set.• Turning the crown continuously causes the cities

to advance rapidly.4. Press button (A) to set the city and press button

(B) to set daylight savings time.5. After setting, return the crown to the normal

position.

<Confirming Set Cities>1. When button (A) or button (B) is pressed when

the watch is in the zone setting [SET] mode (withthe crown in the normal position), the city nameand SET or OFF are displayed each time thebutton is pressed.

• Only those cities for which SET is displayed canbe accessed from each mode.

<Registration of Arbitrary City and TimeDifference>

1. Turn the crown while in the normal position andset the mode hand to the zone setting [SET] mode.

2. When the crown is pulled out to the second click(city setting position), the watch enters thecorrection state for the third letter of the city name.

3. Turning the crown displays those characters thatare used for city names.

• Turning the crown continuously causes thecharacters to advance rapidly.

4. The correction location changes each time button(A) is pressed.

5. When button (A) is pressed during the correctionstate of the first character of the city name, thewatch enters the correction state for the timedifference from UTC.

6. Turn the crown to display the time difference.7. After setting, return the crown to the normal

position.

<Characters and Symbols Used in City Names>• Letters of the alphabet (A to Z)• Numbers (0-9)• Symbols (--: hyphens, ■ : blank spaces)

<Display Sequence>When the crown is turned forward (clockwise), thedisplay changes in the order of letters (A-Z),numbers (0-9) and then symbols (■ : blank spaces,--: hyphens)When the crown is turned backward (counter-clockwise), the display sequence is opposite thatwhen turning the crown forward.

<Order in which Registered Cities areDisplayed>The location having the same time differenceamong the 30 cities pre-registered in this watch isdisplayed first. However, a city is not displayed if thetime difference of a registered city has not been set.

<Cancelling Registered Cities>1. Turn the crown to set the mode hand to the zone

setting [SET] mode.2. When the crown is pulled out to the second click

(city setting position), the watch enters the cityname correction state.

3. Turn the crown to change the display of theregistered city name to “__ __ __”.

4. After cancelling registration, return the crown tothe normal position.

14. All-ResetWhen this watch indicates an abnormal display,alarm continues to sound, etc., as a result of beingsubjected to the effects of static electricity or strongimpact and so forth, perform the all-reset proceduredescribed below.When performing the all-reset procedure, firstmake sure that the watch is sufficiently chargedand that the charge indicator is lit.

<All-Reset Procedure>

1. Turn the crown to set the mode hand to thechronograph [CHR] mode.

2. Pull out the crown to the second click (0-positioncorrection mode).

• The second hand, minute hand, 24 hour hand,UTC hour hand and UTC minute hand rapidlyadvance to the 0 position stored in the memory.

3. Press button (A) and (B) simultaneously and thenrelease.

• All segments of the digital display are shownwhen either of the buttons is released.

4. This fully lit display is cancelled when the crownis returned to the normal position.

• After cancelling, a confirmation tone is soundedafter which each of the hands perform ademonstration movement in the order of thesecond hand, minute hand, UTC minute hand,UTC hour hand and 24 hour hand to indicate thatthe all-reset procedure is finished.

• After the demonstration movement, pull the crownout to the second click to switch the watch to thewatch base position setting state.Always make sure to set the 0 position (baseposition) for the hour hand, minute hand, secondhand, 24 hour hand and UTC minute and hourhands while referring to “5. Checking 0-Position ofEach Hand <0-Position Correction>”.

Note:After setting the 0 position (base position) for eachhand, correctly reset the time, calendar and othermodes before using the watch.

15. Functions Unique to Solar-Powered Watches

[Insufficient Charging Warning Function](Analog Display)Regardless of the display (mode)of the watch at the time, when thewatch becomes insufficientlycharged, the watch changes to thetime display and the second handbegins to move at two-secondinterval movement. Although the 24hour hand, hour hand and minutehand continue to keep the correcttime, the watch stops after about1.5 days have elapsed after the insufficientcharging warning function is activated. When thishappens, charge the watch by exposing to light sothat it returns to the one-second interval movement.However, if the watch again becomes insufficientlycharged without setting the time after it has beensufficiently charged by exposing to light as a resultof having stopped due to being insufficiently charged,it will not return to the normal display unless thetime is set after again sufficiently charging.

(Digital Display)“CHARGE” flashes on digital display area 2 in allmodes.

<Digital Display in Each Mode>• The watch displays the normal time display

regardless of the position of the crown (pulled outto the first or second click) in each mode exceptfor the calendar mode.

• When the watch is in the calendar mode, thenormal date display is displayed regardless of theposition of the crown.

Notes:• Crown operations do not function (except for

mode switching (with the crown in the normalposition)) in any of the modes.

• Button operations do not function, except forchanging the city name (UP/DOWN), in any of themodes.

• The alarm tone does not sound even if it is set.• The chronograph is interrupted and reset even if

measurement is in progress.• Timing by the timer is immediately interrupted

even if timing is in progress.• In the case the watch switches to the insufficient

charging warning function as a result of being insufficiently charged, it takes a minimum of 30minutes for the watch to return to the normaloperating state even if sufficiently exposed to light.

<When the Insufficient Charging WarningFunction is Cancelled>When the insufficient charging warning function iscancelled as a result of exposing the watch to lightand sufficiently charging, the watch returns to themode indicated by the mode hand.

[Time Setting Warning Function](Analog Display)The watch stops when insufficient chargingcontinues for about 1.5 days. When the watch ischarged by exposing to light after having stoppeddue to insufficient charging, each hand is rapidlyadvanced to the base position and stops. Eachhand remains stopped until the time is reset.

(Digital Display)The initial setting display (12 hours, 00 minutes, 00seconds, UTC or January 1 SA) flashes in the timeor calendar mode.

<Cancelling the Time Setting Warning Function>1. Set the mode hand to the time mode and pull the

crown out to the second click to set the time.Flashing of the digital display is only cancelled inthe time mode. After correcting the time, returnthe crown to the normal position.

2. Set the mode hand to the calendar mode andpull the crown out to the second click to set thedate. Flashing of the digital display is cancelledin the calendar mode.

3. After correcting the date, return the crown to thenormal position.

Note:• The time setting warning function will not be

cancelled unless the time is first set followed bysetting the date.

• It takes a minimum of 30 minutes until the watchswitches to the time setting warning display afterthe watch has stopped due to insufficient chargingeven if the watch is exposed to light.

[Overcharging Prevention Function]The overcharging prevention function is activatedwhen the second battery is fully charged so that it isnot charged further. This allows the user to chargethe watch without any risk of overcharging.

[Power Save 1]When power is not generated as a result of thesolar cell not being exposed to light, the secondhand stops when it reaches the zero secondsposition and the watch automatically enters thepower save state to inhibit power consumption ofthe secondary battery.

(Analog Display)• The second hand stops at the base position (12:00).• Other hands continue to keep correct time.

(Digital Display)• In coordination with the analog second hand

stopping at zero seconds position, the entire digitaldisplay goes out. However, the alarm, chronographand other functions continue to measure timeinternally even though there is no display.

<Cancelling Power Save 1>Power save 1 is cancelled when power generationresumes as a result of exposing the solar cell to light.• The second hand rapidly advances to the current

time and begins one-second interval movement.• The digital display reappears simultaneous to

resumption of power generation.Notes:During the time the secondary battery is fullycharged and the overcharging prevention function isactivated, the power save function is not activatedeven if power generation is interrupted as a resultof the solar cell not being exposed to light. Inaddition, the power save function is similarly notactivated when the solar cell is exposed to intenselight and temporarily becomes fully charged.

[Power Save 2]When the watch reaches the first 12:00 AM position(when the 24 hour hand, hour hand, minute hand,and UTC minute hand all reach the referenceposition) after the Power Save 1 state hascontinued for 3 days, it enters the Power Save 2state.(Analog Display)• The minute and second hands stop at the base

position (12:00).• Other hands stop moving at their current locations.(Digital Display)• The digital display remains completely out in

continuation from the Power Save 1 state.Notes:• Crown and button operations do not function in

any mode.• The alarm tone does not sound even if it is set.• The tone indicating that the time is up does not

sound in the timer mode.<Cancelling Power Save 2>Similar to Power Save 1, Power Save 2 iscancelled when power generation resumes as aresult of exposing the solar cell to light.• Each hand rapidly advances to the current time

and begins to move.• The digital display reappears simultaneous to the

resumption of power generation. However, thechronograph returns to the reset state and thetimer switches to the initial setting display.

[Manual Power Save]When not using the watch for an extended period oftime, activating the manual power save functionafter first charging the watch until three bars of thegraphic display of the secondary battery chargeindicator are lit enables the watch to be stored for alonger period of time.Furthermore, do not charge the watch while themanual power save function is activated. First cancelthe manual power save function before charging.

<Setting Manual Power Save>The manual power save function is activated bysetting the city name to “C65” and time difference to“0” while following the procedure described in<Registration of Arbitrary City and Time Difference>in section 13 on Using Zone Setting and thenreturning the crown to the normal position.(Analog Display)• Each hand stops moving at its current location.(Digital Display)• The entire digital display is not lit.Notes:• None of the button operations function in any mode.• The mode does not change even when the mode

hand is attempted to be moved by turning thecrown.

<Cancelling Manual Power Save>Each hand rapidly advances to the current time andManual Power Save is cancelled when the crown ispulled out to the second click.Return the crown to the normal position aftercancelling the manual power save function.• Each hand rapidly advances to the current time

and begins to move.• The digital display reappears simultaneous to the

resumption of power generation and the alarmsounds for the set duration. However, thechronograph returns to the reset state and thetimer switches to the initial setting display.

[Charge Indicator]The charge indicator provides a simple graphicindication in digital display area 2 of the amount ofcharge remaining in the second battery.

<Interpretation of Secondary Battery ChargeLevels>

When none of the bars of the graphic display are lit,the secondary battery has essentially becomecompletely discharged and the second hand beginstwo-second interval movement. Since the watch willstop due to insufficient charging if this statecontinues for about 1.5 days, sufficiently charge thewatch by exposing to light.

16. General Reference for Charging TimesThe time required for charging varies according tothe model of the watch (colour of the dial, etc.). Thefollowing times are shown below to serve only as areference.

* Recharging time refers to the amount of time thewatch is continuously exposed to light.

Illuminance(lx)

500 Inside an ordinary office

60-70 cm (24-28 in.) underflorescent light (30 W)

20 cm (8 in.) under florescentlight (30 W)

Outdoors, cloudy weather

Outdoors, summer, underdirect sunlight

1,000

3,000

10,000

100,000

Environment

Charging time

Charging time for1 day of operation

2 hours30minutes 15 hours 182 hours

87 hours

29 hours

9 hours

5 hours

8 hours

3 hours

1 hours30 minutes

50 minutes

1 hour

20 minutes

6 minutes

3 minutes

Charging time fromthe stopped state toone-second interval

movement

Charging time fromstopped state to fully

charged

17. Notes Regarding Handling of this Watch<Try to keep the watch charged at all times>• Please note that if you routinely wear long

sleeves, the watch can easily becomeinsufficiently charged as a result of beingconcealed and unable to be exposed to light.

• When you take the watch off, try to place it in asbright a location as possible to ensure that italways keeps the correct time.

Notes: Charging Precautions• Avoid recharging at high temperatures (over about

60˚C/140˚F) since this may result in damage tothe watch as a result of excessively hightemperatures.Examples: Charging the watch in close proximityto an incandescent lamp, halogen lamp or otherlight source that can easily reach hightemperatures, charging the watch in a locationthat reaches high temperatures such as on a cardashboard.

• When charging the watch with an incandescentlamp, always make sure the watch is at least50cm (20in) away from the lamp so that it doesnot reach excessively high temperatures duringcharging.

18. Replacing The Secondary BatteryUnlike ordinary batteries, the secondary batteryused in this watch doesn’t have to beperiodically replaced due to repeated chargingand discharging.Caution• Never use another battery different from the

secondary battery used in this watch.• The watch structure is so designed that a different

kind of battery other than that specified cannot beused to operate it. In case a different kind ofbattery such as a silver battery is used by somechance, there is a danger that it will beovercharged to burst causing damage, causingdamage to the watch and even to the humanbody.

19. Using the register ringThe bezel design may vary depending on themodel.[Calculation Function]Note the following pointswhen using this function.Use the calculation functionof this watch only as aguide. These scales do not indicate the position ofthe decimal point.

A. Navigational calculation1) Time requiredExample: Obtain the time required for the flight of

an aircraft at 180 knots for 450 nauticalmiles.

Answer: Align “18” on the outer scale with thespeed index (▲) on the inner scale. Then“45” on the outer scale corresponds to“2:30” on the inner scale (time scale).Thus the time required for the flight is 2hours and 30 minutes.

2) Knots (air speed)Example: Obtain the knots (air speed) for 240

nautical miles with a flight time of 1 hourand 20 minutes

Answer: Align “24” on the outer scale with “1:20”on the inner scale (time scale). Then theSPEED INDEX (▲) on the inner scalecorresponds to “18” on the outer scale.Thus, the air speed for the flight is 180knots.

3) Flight distanceExample: Obtain the air distance when the air

speed is 210 knots and the flight time is40 minutes.

Answer: Align “21” on the outer scale with theSPEED INDEX (▲) on the inner scale,then, “40” on the inner scale correspondsto “14” on the outer scale. Thus, the airdistance of the flight was 140 nauticalmiles.

4) Rate of fuel consumptionExample: Obtain the rate of fuel consumption

(gallons/hour) when the flight time is 30minutes and the fuel consumption is 120gallons.

Answer: Align “12” on the outer scale with “30” onthe inner scale. Then, the SPEED INDEX(▲) on the inner scale corresponds to“24” on the outer scale. Thus, the fuelconsumption is 240 gallons per hour.

5) Fuel consumptionExample: Obtain the fuel consumption required for

a flight when the rate of fuel consumptionis 250 gallons per hour and the flight timeis 6 hours.

Answer: Align “25” on the outer scale with theSPEED INDEX (▲)on the inner scale.Then “6:00” on the inner scale (timescale) corresponds to “15” on the outerscale. Thus, the fuel consumption is 1500gallons.

6) Estimated flight timeExample: Obtain the estimated flight time when the

rate of fuel consumption is 220 gallonsper hour and the aircraft has 550 gallonsof fuel.

Answer: Align “22” on the outer scale with theSPEED INDEX (▲) on the inner scale.Then, “55” on the outer scalecorresponds to “2:30” on the inner scale(time scale). Thus, the estimated flighttime is 2 hours and 30 minutes.

7) Difference in altitudeThe difference in altitude can be obtained from therate of descent and the descent time.Example: Obtain the difference in altitude when an

aircraft continues descending for 23minutes at a rate of 250 feet per minute.

Answer: Align “25” on the outer scale with “10” onthe inner scale. Then, “23” on the innerscale corresponds to “57.5” on the outerscale. Thus, the difference in altitude is5,750 feet.

8) Rate of climb (or descent)The rate of climb (or descent) can be obtained fromthe time required to reach an altitude.Example Obtain the rate of climb when an aircraft

reaches an altitude of 7,500 feet afterclimbing for 16 minutes.

Answer: Align “75” on the outer scale with “16” onthe inner scale. Then, “10” on the innerscale corresponds to “47” on the outerscale. Thus, the rate of climb is 470 perminute.

9) Time of climb (or descent)The time required for climb can be obtained fromthe altitude to be reached and the rate of climb (ordescent).Example: Obtain the time of climb when an aircraft

is to climb to 6,300 feet at a rate of 550feet per minute.

Answer: Align “55” on the outer scale with “10” onthe inner scale. Then, “63” on the outerscale corresponds to “11.5” on the innerscale. Thus, the time of climb is 11minutes and 30 seconds.

10) ConversionExample: Convert 30 statuts miles into nautical

miles and kilometres.Operation: Align “30” on the outer scale with STAT

(▲) on the inner scale. Then NAUT (▲)on the inner scale corresponds to “26”nautical miles on the outer scale, and“12km”(s) on the inner scalecorresponds to “48.2” km on the outerscale.

B. General Calculation Functions1) MultiplicationExample: 20 x 15Operation: Align “20” on the outer scale with “10” on

the inner scale. Then “15” on the innerscale corresponds to “30” on the outerscale. Take into account the position of

the decimal point and add one zero toobtain 300. Note that with the scales ofthis watch, the position of the decimalpoint cannot be obtained.

2. DivisionExample: 250/ 20Operation: Align “25” on the outer scale with “20” on

the inner scale. Then “10” on the innerscale corresponds to “12.5” on the outerscale. Take into account the position ofthe decimal point to obtain 12.5.

3. ProportionExample: 30/20 = 60/xOperation: Align “30” on the outer scale with “20” on

the inner scale. Then “60” on the outerscale corresponds to “40” on the innerscale. At this point the proportion forevery value on the inner and outerscales is 30:20.

4. Square rootExample: Square root of 225Operation: Turn the outer scale slowly and find a

value that corresponds to both “22.5” onthe outer scale and “10” on the innerscale. In this example, “22.5” on theouter scale corresponds to “15” on theinner scale and “10” on the inner scalecorresponds to “15” on the outer scale.Thus, the answer is 15.

20. PRECAUTIONSCAUTION: Water-resistance performanceThere are several types of water-resistant watches,as shown in the following table.

The unit “bar” is roughly equal to 1 atmosphere.* WATER RESIST(ANT) xx bar may also beindicated as W.R.xx bar.

For correct use within the design limits of thewatch, confirm the level of water-resistance of yourwatch, as indicated on the dial and case, andconsult the table.

• Water resistance for daily use (up to 3atmospheres): This type of watch is water-resistant to minor exposure to water. For example,you may wear the watch while washing your face;however, it is not designed for use underwater.

• Upgraded water-resistance for daily use (to 5atmospheres): This type of watch is water-resistant to moderate exposure to water. You maywear the watch while swimming; however, it is notdesigned for use when skin diving.

• Upgraded water-resistance for daily use (to 10/20atmospheres): This type of watch may be used forskin diving; however, it is not designed for scubaor saturated diving using helium gas.

CAUTION• Do NOT operate the crown or button with wet

fingers or when the watch is wet. Water may enterthe watch and compromise water-resistance.

• If the watch is used in seawater, rinse with freshwater afterward and wipe with a dry cloth.

• If moisture has entered the watch, or the inside ofthe crystal is fogged up and does not becomeclear within a day, immediately take the watch toyour dealer or Citizen Service Centre for repair.Leaving the watch in such a state will allowcorrosion to form inside.

• If seawater enters the watch, place the watch in abox or plastic bag and immediately take it in forrepair. Otherwise pressure inside the watch willincrease, and parts (crystal, crown, buttons, etc.)may come off.

CAUTION: Keep your watch clean.• Dust and dirt tend to be deposited in gaps in the

back of the case or band.• Deposited dust and dirt may cause corrosion and

soil your clothing. Clean the watch occasionally.Cleaning the watch• Use a soft cloth to wipe off dirt, perspiration and

water from the case and the crystal.• Use a soft cloth to wipe off dirt, perspiration and

water from the leather band.• To clean a metal, plastic, or rubber watchband,

wash away dirt with mild soap and water. Use asoft brush to remove dust and dirt jammed in thegaps in the metal bands. If your watch is notwater-resistant, take it to your dealer.

NOTE: Avoid using solvents (thinner, benzine, etc.),as they may mar the finish.

CAUTION: Operating environment• Use the watch within the operating-temperature

range specified in the instruction manual.Using the watch where temperatures are outsidethe specified range, may result in deterioration offunctions or even stoppage of the watch.

• Do NOT use the watch in places where it isexposed to high temperature, such as in a sauna.Doing so may result in skin burn.

• Do NOT leave the watch in a place where it isexposed to high temperature, such as the glovecompartment or dashboard of a car.Doing so may result in deterioration of the watch,such as deformation of plastic parts.

• Do NOT place the watch close to a magnet.Timekeeping will become inaccurate if you placethe watch close to magnetic health equipmentsuch as a magnetic necklace or a magnetic latchof a refrigerator door or handbag clasp or theearphone of a mobile phone. If this has occurred,move the watch away from the magnet and resetthe time.

• Do NOT place the watch close to householdappliances that generate static electricity, such asis emitted from a TV screen.

• Do NOT subject the watch in an environmentwhere it may be exposed to chemicals orcorrosive gases.If solvents, such as thinner and benzine, orsubstances containing such solvents come incontact with the watch, discolouration, melting,cracking, etc., may result. If the watch comes incontact with mercury used in thermometers, thecase, band, or other parts may becomediscoloured.

21. Specifications

1. Calibre No.: C650-00A2. Type: Combination solar-powered watch3. Accuracy: Within ±15 seconds per month (whenworn at normal temperature of +5°C to +35°C (41°Fto 95°F)4. Operating Temperature Range:Watch operating temperature range: 0°C to +55°C(32°F to 131°F)5. Display Functions:Analog • Time: Seconds, minutes, hours, 24 hours,UTC minutes, UTC hours, modeDigital • Time: Seconds, minutes, hours, city name,daylight savings time, A/P

• Calendar: Month, date, day, city name• Alarm 1: Hours, minutes, A/P, city name,

ON/OFF• Alarm 2: Hours, minutes, A/P, city name,

ON/OFF• Alarm 3: Hours, minutes, A/P, city name,

ON/OFF• Chronograph: Chronograph hours,

chronograph minutes, chronograph seconds,chronograph 1/100 seconds, SPL, 24 hourmeasurement

• Timer: Timer remaining minutes, timerremaining seconds, set minutes (timer settingrange: 99 minutes to 1 minute units)

• Zone setting: City name (SET/OFF),daylight savings time (ON/OFF), display setting andcancellation for each city, setting of ON/OFF fordaylight savings time for each city

6. Additional Functions• Switching between main time (analog) and sub-

time (digital)• Power Save 1: Automatically stops second hand

movement and liquid crystal display• Power Save 2: Automatically stops watch

functions• Manual Power Save: Enables watch functions to

be stopped arbitrarily (forcibly)• Power Indicator: Approximate indication of

secondary battery charging level.• Insufficient charge warning function.• Time setting warning function• Overcharging prevention function

7. Continuous running times:Fully charged to stopped: Roughly 4 years (whenPower Save 2 function is operating)Two-second interval movement to stopped:Roughly 1.5 days

8. Battery: Secondary battery

*Specifications are subject to change without notice

c650

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